Pivoted jaw pliers



Nov. 3, 1959 J. w. RAlNs 2,910,903

PIvoTED JAW PLIERs Filed May e. 195e y Jesse Rains v INVENTOR. 6'/ lb-:5 BY \v United dtates Patent O PIVOTED JAW PLIERS Jesse W. Rains, Brady, Tex.

Application May 6, 1958, Serial No. 733,431

4 Claims. (Cl. 81-381) The present invention relates to new and useful irnprovements in hand tools of the hand grip or plier type and has for its primary object to provide, in a manner as 'hereinafter set forth, an implement of this character comprising novel means for greatly increasing the leverage or power when the jaws or blades are closed on the work.

Another important object of the invention is to provide, in a hand power tool of the type comprising a pair of handles crossed and pivotally connected at one end, coacting jaws or blades on the pivoted ends of said handles and an operating lever, novel means operatively connecting one of said handles to said lever for actuation thereby.

Other objects of the invention are to provide a hand power tool of the aforementioned character which will be comparatively simple in construction, strong, durable, compact, of light weight and which may be manufactured at low cost.

These together with other objects and advantages which will become subsequently apparent reside in the details of construction and operation as more fully hereinafter described and claimed, reference being had to the accompanying drawing forming a part hereof, wherein like numerals refer to like parts throughout, and in which:

Figure l is a View in side elevation of a hand power tool constructed in accordance with the present invention, showing an intermediate portion of the tubular lever broken away in section;

Figure 2 is a top plan view of the tool;

Figure 3 is a bottom plan view; and

Figure 4 is an enlarged view in transverse section, taken substantially along the line 4-4 of Figure l.

Referring now to the drawing in detail, it will be seen that the embodiment of the invention which has been illustrated comprises a pair of relatively short and long` upper and lower handles 5 and 6, respectively, of suitable metal. The handles 5 and 6 are crossed and pivotall, connected at one end, as at 7. Formed integrally with the pivotally connected ends of the handles 5 and 6 is a pair of opposed, coacting jaws 8 and 9 for receiving and gripping the Work therebetween. If desired, the joint 7 may be a pin and slot connection for adjusting the jaws 8 and 9 toward or away from each other. The jaws 8 and 9, in the embodiment shown, comprise Stillson type teeth 10, wire cutting blades 11, etc.

A tubular lever 12 of suitable metal has one end portion flattened, as indicated at 13, and pivotally connected to the jaw 9 of the handle 6 at 14. The tubular lever 12 provided `in its lower portion with a longitudinal slot The handle 5 terminates in a reduced, upwardly extending inner or rear end portion 16 which is operable in the slot 15. Mounted transversely on the upturned end portion 16 of the handle 5, within the tubular lever 12, is a pin or shaft 17. A pair of wheels or rollers 18 are journaled on the end portions of the shaft 17 for operation in the tubular lever 12. Thus, the lever 12 is operatively connected to the short handle 5.

It is thought that the use or operation of the tool will be readily apparent from a consideration of the foregoing. Brieiiy, the handle 6 and the lever l2 are opened or swung away from each other, said lever 12 actuating the handle ice 5 for opening the jaws 8 and 9 for receiving the work therebetween. The operation is then reversed for causing the jaws 8 and 9 to close and grip the work, the wheels or rollers 18 travelling in the tubular lever 12 in an obvious manner. Of course, the elements 16, 17 and 18 pivotally and slidably connect the handle 5 to the lever 12. As the tool is closed the several pivotal connections approach but do not quite attain a dead center or in-line position. When the tool is closed, also, the wheels or rollers 18 travel on the upper portion of the tubular lever l2. If desired, a coil spring (not shown) may be mounted in the tubular lever 12 and engaged with the rear end portion of the handle 5 for yieldingly urging the same forwardly in said handle for automatically opening the tool.

The foregoing is considered as illustrative only of the principles of the invention. Further, since numerous modifications and changes will readily occur `to those skilled in the art, it is not desired to limit the invention Vto the exact construction and operation shown and described, and accordingly, all suitable modifications and equivalents may be resorted to, falling within the scope of the invention as claimed.

What is claimed as new is as follows:

l. A hand tool comprising: a pair of handles crossed and pivotally connected at one end, coacting members on the pivotally connected ends of the handles for receiving the work therebetween, a lever pivotally mounted on one of said members, and means operatively connecting said lever to one of the handles, said lever being of tubular construction and having a longitudinal slot therein, the other end portion of said one handle being operable in the slot, and rollers journaled on said other end portion of said one handle and operable in the lever.

2. A hand tool comprising: a pair of long and short handles crossed and pivotally connected at one end, coacting members on the pivotally connected ends of said handles for receiving the work therebetween, a tubular lever having one end portion pivotally connected to one of said members, said lever having a longitudinal slot therein, and means operatively connecting the lever to the short handle for closing the members in conjunction with the long handle, said means including a member on the other end of the short handle operable in the slot, and rollers on the last named member operable in the lever.

3. A hand tool comprising: a pair of handles crossed and pivotally connected at one end, coacting jaws on the pivotally connected ends of the handles for receiving the work therebetween, a tubular lever pivotally mounted on one of the jaws and having a longitudinal slot therein, the free end portion of one of the handles being operable in the slot, and rollers journaled on said free end portion of said one handle and operable in the lever for pivotally and slidably connecting said one handle to said lever for actuation thereby.

4. A hand-tool comprising: a short handle and a relatively long handle crossed and pivotally connected at one end, a jaw on the pivoted end of the long handle, a jaw on the pivoted end of the short handle cooperable with the tlrst named jaw, a tubular lever having one end portion pivotally connected to the first named jaw, said lever having a longitudinal slot therein, the other end portion of the short handle being operable in the slot, a shaft on said other end portion of said short handle, and rollers on said shaft operable in the lever for pivotally and slidably connecting said short handle to said lever for actuation thereby.

Arbogast Jan. 17, 1924 Wilson Mar. 22, 1932 

